Sections
Key Terms

# Key Terms

angle of rotation
the ratio of the arc length to the radius of curvature of a circular path
angular acceleration
the rate of change of angular velocity with time
angular velocity
($ωω$) the rate of change in the angular position of an object following a circular path
arc length
($ΔsΔs$) the distance traveled by an object along a circular path
centrifugal force
a fictitious force that acts in the direction opposite the centripetal acceleration
centripetal acceleration
the acceleration of an object moving in a circle, directed toward the center of the circle
centripetal force
any force causing uniform circular motion
circular motion
the motion of an object along a circular path
kinematics of rotational motion
the relationships between rotation angle, angular velocity, angular acceleration, and time
lever arm
the distance between the point of rotation (pivot point) and the location where force is applied